做差 通分分子同比分母即可
中間數(shù)為1/67
1/34+1/100>1/35+1/99>1/36+1/98>……>1/66 +1/68>1/67 +1/67
(這個通過通分,轉(zhuǎn)化為分子相同的分?jǐn)?shù)比較大小的問題.)
所以:
1/34+1/35+1/36+……+1/100>67*1/67=1
分?jǐn)?shù)題:1/34+1/35+1/36+……+1/100
分?jǐn)?shù)題:1/34+1/35+1/36+……+1/100
數(shù)學(xué)人氣:970 ℃時間:2020-06-03 14:47:28
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